Using ZXing to create an Android barcode scanning app

Question

I ve been searching for how to add a barcode scanner to my app  Are there any examples or how can I do this easily

User · Answer

I had a problem with implementing the code until I found some website (I can't find it again right now) that explained that you need to include the package name in the name of the intent.putExtra.

It would pull up the application, but it wouldn't recognize any barcodes, and when I changed it from.

intent.putExtra("SCAN_MODE", "QR_CODE_MODE");

to

intent.putExtra("com.google.zxing.client.android.SCAN.SCAN_MODE", "QR_CODE_MODE");

It worked great. Just a tip for any other novice Android programmers.

User · Answer

Barcode Detection is now available in Google Play services   Code lab of the setup process  here are the api docs  and a sample project

User · Answer

Using the provided IntentInegrator is better   It allows you to prompt your user to install the barcode scanner if they do not have it   It also allows you to customize the messages   The IntentIntegrator REQUEST CODE constant holds the value of the request code for the onActivityResult  to check for in the above if block     IntentIntegrator intentIntegrator   new IntentIntegrator this      where this is activity  intentIntegrator initiateScan IntentIntegrator ALL CODE TYPES      or QR CODE TYPES if you need to scan QR   IntentIntegrator java

User · Answer

If you want to include into your code and not use the IntentIntegrator that the ZXing library recommend  you can use some of these ports    http   code google com p android-zxinglib  http   code google com p android-quick-response-code    I use the first  and it works perfectly  It has a sample project to try it on

User · Answer

Using Zxing this way requires a user to also install the barcode scanner app  which isn t ideal  What you probably want is to bundle Zxing into your app directly   I highly recommend using this library  https   github com dm77 barcodescanner  It takes all the crazy build issues you re going to run into trying to integrate Xzing or Zbar directly  It uses those libraries under the covers  but wraps them in a very simple to use API

User · Answer

You can use this quick start guide http   shyyko wordpress com 2013 07 30 zxing-with-android-quick-start  with simple example project to build android app without IntentIntegrator

User · Answer

The ZXing project provides a standalone barcode reader application which  mdash  via Android s intent mechanism  mdash  can be called by other applications who wish to integrate barcode scanning   The easiest way to do this is to call the ZXing SCAN Intent from your application  like this   public Button OnClickListener mScan   new Button OnClickListener         public void onClick View v            Intent intent   new Intent  com google zxing client android SCAN            intent putExtra  SCAN MODE    QR CODE MODE            startActivityForResult intent  0             public void onActivityResult int requestCode  int resultCode  Intent intent        if  requestCode    0            if  resultCode    RESULT OK                String contents   intent getStringExtra  SCAN RESULT                String format   intent getStringExtra  SCAN RESULT FORMAT                   Handle successful scan           else if  resultCode    RESULT CANCELED                   Handle cancel                     Pressing the button linked to mScan would launch directly into the ZXing barcode scanner screen  or crash if ZXing isn t installed    Once a barcode has been recognised  you ll receive the result in your Activity  here in the contents variable   To avoid the crashing and simplify things for you  ZXing have provided a utility class which you could integrate into your application to make the installation of ZXing smoother  by redirecting the user to the Android Market if they don t have it installed already   Finally  if you want to integrate barcode scanning directly into your application without relying on having the separate ZXing application installed  well then it s an open source project and you can do so        Edit  Somebody edited this guide into this answer  it sounds a bit odd  I can t vouch as to its accuracy  and I m not sure why they re using Eclipse in 2015    Step by step to setup zxing 3 2 1 in eclipse   Download zxing-master zip from  https   github com zxing zxing  Unzip zxing-master zip  Use eclipse to import  android  project in zxing-master Download core-3 2 1 jar from  http   repo1 maven org maven2 com google zxing core 3 2 1   Create  libs  folder in  android  project and paste cor-3 2 1 jar into the libs folder Click on project  choose  properties  -   Java Compiler  to change level to 1 7  Then click on  Android  change  Project build target  to android 4 4 2   because using 1 7 requires compiling with Android 4 4 If  CameraConfigurationUtils java  don t exist in  zxing-master android app src main java com google zxing client android camera    You can copy it from  zxing-master android-core src main java com google zxing client android camera   and paste to your project  Clean and build project  If your project show error about  switch - case   you should change them to  if - else   Completed  Clean and build project  You can click on  Proprties     Android    click on  Is Libraries  to use for your project

[android] Using ZXing to create an Android barcode scanning app

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